Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 22,589	$ 26,918
Marketable securities	5,257	5,230
Accounts receivable, net	7,097	7,536
Other current assets	5,738	4,805
Total current assets	40,681	44,489
Investments	3,624	4,062
Property and equipment, at cost less accumulated depreciation	11,841	11,319
Other long-term assets	5,411	3,956
Total assets	61,557	63,826
Current liabilities:
Accounts payable	1,154	1,557
Deferred revenue, current portion	1,572	2,310
Accrued payroll	2,150	2,172
Accrued expenses	991	971
Other current liabilities	2,140	2,530
Total current liabilities	8,007	9,540
Commitments and Contingencies
Noncurrent liabilities:
Deferred revenue, net of current portion	205	265
Long-term lease obligation	2,183	1,121
Other current liabilities	313	196
Common stock, $0.01 par value: Authorized shares - 20,000,000; Issued shares – 9,026,940 and 9,016,140 at June 30, 2024 and December 31, 2023, respectively; Outstanding shares – 8,024,518 and 8,295,408 at June 30, 2024 and December 31, 2023, respectively	91	90
Additional paid-in capital	17,205	16,621
Treasury stock, 1,002,422 and 720,732 shares at June 30, 2024 and December 31, 2023, respectively, at cost	(24,097)	(20,359)
Accumulated other comprehensive income	4	32
Accumulated earnings	57,646	56,320
Total stockholders’ equity	50,849	52,704
Total liabilities and stockholders’ equity	61,557	63,826
Total noncurrent liabilities	2,701	1,582
Other current liabilities	$ 313	$ 196